- ASSOC_STRINGL_EX("httpVersion", version, spprintf(&version, 0, "%u.%u", obj->message->http.version.major, obj->message->http.version.minor), 0);
+ verlen = spprintf(&version, 0, "%u.%u", obj->message->http.version.major, obj->message->http.version.minor);
+ ASSOC_STRINGL_EX("httpVersion", version, verlen, 0);